Question

Distinction between n–type and p–type Semiconductors.

Answer 1

n–type Semiconductor	p–type Semiconductor
1. It is an extrinsic semiconductor obtained by adding a pentavelent impurity to a pure intrinsic semiconductor.	It is also an extrinsic semiconductor obtained by adding a trivalent impurity to a pure intrinsic semiconductor.
2. The impurity atoms added provide extra free electrons to the crystal lattice and are called donor atoms.	The impurity atoms added create holes in the crystal lattice and are impurity to a pure intrinsic semiconductor.
3. The electrons are majority carriers and the holes minority carriers.	The holes are majority carriers and the electron are minority carreris.
4. The electrons concentration is much more than the hole concentration (ne >> nh).	The hole concentration is much more than the electron concentration (nh >> ne).